Features: - GC Fuji IX GP Extra is the latest addition to the well established family of glass ionomers that offer unsurpassed wear resistance, compressive strength, and durability. - GC Fuji IX GP Extra is the fastest setting glass ionomer on the market. While maintaining the ample working time of GC Fuji IX GP FAST (1 1/4 minutes), GC Fuji IX GP EXTRA allows final finishing in only 2 1/2 minutes from initial mix. - The faster final set saves valuable chair time which provides improved stability against water, an important feature in challenging oral environments. - This product contains a next generation glass filler, SmartGlass. - The filler elicits higher translucency, fluoride release, reactivity and a faster setting time. - The unique optical properties of the new filler have also allowed GC America to create a new, lighter shade.